Wins
232
Indexed tournament wins
Player record
Sean Koster
Losses
316
Indexed tournament losses
Matches
548
Decisive results
Win rate
42.3%
Across indexed matches
Peak rating
1,907
Highest rating in the available history.
Biggest upset
Connell, Grant
2017 Arizona Open & Giant RR · Feb 18, 2017 · +529 rating
Open →Biggest loss
Shikhare, Rudra
North-West La Open 2** Sanctioned Tournament · Nov 18, 2018 · -601 rating
Open →Most frequent opponent
Mike Burg
13 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
62 tournament appearances · synced Aug 8, 2026, 2:52 PM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| Oct 30, 2016 | TT and M October OpenTournament · View matches | 1,159 | 1,167 | +8+8 / 0 | 2W / 2L |
| Aug 20, 2016 | TT&M August OpenTournament · View matches · Initial rating 1,159 | Unrated | 1,159 | +8+18 / -10 | 4W / 3L |
61–62 of 62
PreviousPage 4 of 4